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57869d524a
* Add Chaincode Delegation BIP * Update license to BSD-3-Clause and expand blinded signing documentation * Address initial PR comments * Update with BIP number assignment * Fix delegator_sign test vector * Upgrade secp256k1lab and add license file - Upgrade vendored secp256k1lab to commit a265da1 (adds type annotations) - Add COPYING file to satisfy MIT license requirements - Document secp256k1lab commit reference in BIP text * Fix type checker and linter issues in reference implementation - Fix TweakContext to use Scalar types for gacc/tacc - Replace HashFunction enum with Callable type alias - Fix bytearray to bytes conversion in blind_sign - Move imports to top of file - Fix boolean comparison style (use 'not' instead of '== False') - Add proper type annotations and casts for dict handling - Remove unused imports and type ignore comments * Address PR review comments on terminology and clarity - Add intro explaining delegation naming (chain code is delegated, not signing authority) - Reorder terminology to list Delegator before Delegatee - Replace "quorum" with clearer "can co-sign for UTXOs" language - Clarify derivation constraints in terms of delegatee's extended key - Rename "Delegatee Signing" section to "Signing Modes" - Fix "delegatee can apply" to "delegator can produce" (line 112) - Replace undefined "caller" with "delegatee" (line 173) - Clarify "Change outputs" to "Tweaks for change outputs" (line 98) - Add note that message is separate from CCD bundle - Add note on application-specific verification (addresses, amounts) - Add transition sentence clarifying non-concurrent protocol scope * Add changelog entry for 0.1.3 * Fix header: use Authors (plural) for multiple authors * Fix BIP header format for CI compliance - Change Type from 'Standards Track' to 'Specification' (valid type) - Change 'Created' to 'Assigned' (correct field name per BIP format) - Change 'Post-History' to 'Discussion' (recognized field in buildtable.pl) * Apply suggestion from @murchandamus --------- Co-authored-by: Jesse Posner <jesse.posner@gmail.com>
16 lines
548 B
Python
16 lines
548 B
Python
from .secp256k1 import GE, G
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from .util import int_from_bytes
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# The following function is based on the BIP 327 reference implementation
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# https://github.com/bitcoin/bips/blob/master/bip-0327/reference.py
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# Return the plain public key corresponding to a given secret key
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def pubkey_gen_plain(seckey: bytes) -> bytes:
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d0 = int_from_bytes(seckey)
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if not (1 <= d0 <= GE.ORDER - 1):
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raise ValueError("The secret key must be an integer in the range 1..n-1.")
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P = d0 * G
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assert not P.infinity
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return P.to_bytes_compressed()
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